#include <iostream>
#include "Table.h"

#include "MathFunctions.h"

// a hack square root calculation using simple operations
double mysqrt(double x)
{
	if (x <= 0) {
		return 0;
	}

	// use the table to help find an initial value
	double result = x;
	if (x >= 1 && x < 10) {
		std::cout << "Use the table to help find an initial value " << std::endl;
		result = sqrtTable[static_cast<int>(x)];
	}

	// do ten iterations
	for (int i = 0; i < 10; ++i) {
		if (result <= 0) {
			result = 0.1;
		}
		double delta = x - (result * result);
		result = result + 0.5 * delta / result;
		std::cout << "Computing sqrt of " << x << " to be " << result << std::endl;
	}

	return result;
}
